tiik r»\-iM;oi>rcTS ok iir'k m ii.i.inc. 
13 
Table 13. — Yield of by-products and cleaned rice obtained from the milling of 35,970 
pounds of No. 1 Honduras-type rice. Lot, D . 
[Quanl il v of rice milled: L86 bags or 222 barrels of 162 pounds each; total weight, 35,970 pounds.] 
Cleaned rice and by-products. 
Yield. 
Cleaned rice and by-products. 
yield. 
Hulls 
Pounds. 
7,532 
878 
1,033 
1,101 
1,225 
Per cent. 
20.9 
2.4 
2.8 
3.1 
3.4 
Pounds. 
15, 000 
5,000 
2, 100 
960 
400 
741 
Per cent. 
41.7 
Brans: 
13.9 
Stone reel (29.1 per ccnl ).. 
First break (34.3 percent). 
Second break(36.6 percent j 
Polish... 
5.8 
2.6 
1.1 
2.1 
The laboratory results on the samples from this run are shown in 
Table 14. 
Table 14. — Chemical composition of by-products and of rice at different stages of milling 
No. 1 Honduras-type rice. Lot D. 
Sample 
No. 
Description of sample. 
Mois- 
ture. 
Ash. 
Ash in- 
soluble 
in 10 
per cent 
HCl. 
Ratio 
of insol- 
uble ash 
< to total 
ash. 
Crude 
fiber. 
Pro- 
tein 
(NX 
6.25). 
Ether 
extract. 
Nitro- 
gen-free 
extract. 
18051-L 
Rice hulls 
P.ct. 
8.50 
9.63 
9.77 
9.55 
9.65 
7.93 
12.24 
11.75 
11.57 
7.73 
11.74 
12. 08 
11.75 
12.60 
12.70 
12.43 
11.41 
P. ct. 
20.33 
15.75 
7.26 
6.94 
9.62 
7.05 
P. ct. 
19.29 
12.80 
.74 
.77 
4.27 
.52 
1: 1.05 
1: 1.23 
1: 9.81 
1: 9.01 
1: 2.24 
1:13.56 
P.ct. 
37.24 
22.14 
7.60 
5.92 
11.22 
2.19 
P. ct. 
2.09 
9.36 
15.99 
14.93 
13.67 
13.45 
P.ct. 
0.50 
6.51 
18.38 
15.75 
13.96 
13.48 
P.ct. 
31.34 
12698-L 
Stone-reel bran 
36.61 
18056-L 
18058-L 
First-break bran 
Second-break bran 
Calculated analysis of 
mixed bran 
41.00 
46.91 
41.88 
18060-L 
55 90 
18052-L 
Rough rice before mill- 
12697-L 
Cleaned rough rice 
Rice, bran, and hulls 
12699-L 
12700-L 
Hulls and bran from 
12696-L 
Rice from monitor going 
18053-L 
Rice from clean side of 
paddy machine 
Rice from rough side of 
paddy machine. 
Rice after first-break 
hullers 
18054-L 
18055-L 
18057-L 
Rice after second-break 
18059-L 
Rice after brush ma- 
18059-L 
Rice after brush ma- 
chine (finely ground). 
.33 
.03 
1:11.00 
.59 
9.71 
.54 
77.42 
INTERPRETATION OF RESULTS. 
CONTROL PRODUCTS. 
A few interesting comparisons may be made from the milling 
results. The percentage of hulls from a given lot of rice varied from 
18.7 per cent to 20.9 per cent, the lowest figure being for lot C of 
Japan-type rice and the highest figure for lot D, Honduras type. 
The yield of useful rice by-products — that is, all the brans and the 
polish — varied from 10 per cent for lot B to 11.7 per cent for lot D. 
As lot B was very lightly milled, this variation would be expected. 
